Matches 251 - 300 out of 350 < 1 2 3 4 5 6 7 >
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5561070 Methods for preparing phospholipid coated particles and for eliciting or isolating antiphospholid antibodies and the particles  
The invention provides phospholipid coated particles capable of specifically binding antiphospholipid antibodies and a method for preparing such particles. Methods are also provided for determining...
5552268 Method for measuring total body tissue iron stores  
A non-invasive method to measure total body tissue iron stores comprising recovering iron released from total ferritin contained in a body fluid sample derived from a host, measuring the...
5541117 Immunological method for the determination of a haemoglobin derivative  
The invention concerns a method for the determination of the content of a particular haemoglobin derivative in a blood sample. In particular, the invention concerns a method for the determination...
5525525 Immuno-latex chromatographic procedure for detection of ciguatoxin, and related polyether marine toxins  
An antibody test suitable for the rapid detection of ciguatoxin and other related low molecular weight polyether marine lipid toxins in fish tissue in the field or laboratory is disclosed. The test...
5521102 Controlled sensitivity immunochromatographic assay  
An improved one-step immunochromatographic assay which involves the binding of a predetermined amount of analyte to an antibody, enabling the control of the assay sensitivity, is disclosed. The...
5518887 Immunoassays empolying generic anti-hapten antibodies and materials for use therein  
The present invention relates to immunoassay methods for detecting and measuring the amount of an analyte in a sample by means of generic anti-hapten antibodies. Also disclosed are multi-analyte...
5501949 Particle bound binding component immunoassay  
An immunoassay method for the detection or quantitation of an analyte suspected of being in a solution comprising: (a) combining said specimen, a first binding component, insoluble particles, and...
5494830 Methods for performing determinations of immune reactants in biological fluids  
Apparatus for performing determinations of immune reactants (e.g., antigens, antibodies) in bodily fluids includes multiple test units having respective elongated rods with transversely-expanded...
5489537 Agglutination assays and kits employing colloidal dyes  
The present invention provides methods and kits for determining the presence or amount of a substance by detection of a colloidal dye associated with agglutinated particles. The disclosure of the...
5486479 Buffer for immunoassay, kit including same and immunoassay method using said buffer  
The invention relates to immunoassay reagents that are both sensitive and specific and which require no sample pretreatment. The invention reagents are particularly useful for assaying digoxin...
5484894 ***WITHDRAWN PATENT AS PER THE LATEST USPTO WITHDRAWN LIST***
Macromolecular microparticles and method of production  
A macromolecular microparticle composition formed by dehydrating an aqueous macromolecule solution and crosslinking the dehydrated macromolecules with a crosslinking agent while in a liquid phase...
5462991 Immobilization of pH-sensitive dyes to solid supports  
Disclosed are pH dyes containing a suitable compatible substituent which permits binding of the dye to a solid support. Also disclosed are methods for synthesizing such dyes prior to their coupling...
5460979 Indirect fluorescent assay of blood samples  
A patient's health is diagnosed by centrifuging blood samples in a transparent tube, which tube contains one or more groups of particles such as lyposomes or plastic beads of different densities...
5451505 Methods for tagging and tracing materials with nucleic acids  
The present invention provides methods for tagging and tracing materials using nucleic acids as taggants. The process of tagging involves altering a substance in a manner that allows for the...
5451504 Method and device for detecting the presence of analyte in a sample  
An assay provides for detecting the presence of an analyte in a sample. Sample is applied to move through three zones. A mobilizeable receptor capable of binding to the analyte is present in the...
5447837 Multi-immunoassay diagnostic system for antigens or antibodies or both  
The present invention provides a test strip for detecting, in a sample from a human subject, the presence of an antigenic substance which comprises a solid support, an antibody directed against the...
5439830 Method of performing at immunoassay using photothermal deflection spectroscopy  
In an immunoassay for determining the amount of a target substance in a sample using photothermal deflection spectroscopy to determine the amount of bound label, a sandwich procedure is used which...
5429925 Method for immunodiagnostic detection of dioxins at low concentrations  
A method is described for the use of monoclonal antibodies in a sensitive immunoassay for halogenated dioxins and dibenzofurans in industrial samples which contain impurities. Appropriate sample...
5405784 Agglutination method for the determination of multiple ligands  
The invention provides a method capable of determining the presence or absence of each of a plurality of different ligands in a specimen. The specimen is contacted with a predetermined number of...
5397695 Attachment of compounds to polymeric particles using carbamoylonium compounds and a kit containing same  
Useful materials for diagnostic tests, affinity chromatography, enzymatic reactions and immunoassays are prepared by covalently attaching reactive compounds containing reactive amino or sulfhydryl...
5395754 Membrane-based immunoassay method  
The present invention is directed to a membrane-based immunoassay method for an analyte of interest having at least two sterically separate antigenic sites. The method comprises providing a...
5374531 Immunoassay for determination of cells  
Methods and test kits are provided for the quantitative or qualitative determination of selected analytes, e.g., cell subsets in a mixed cell population, using a particulate separation reagent and...
5372948 Assay and reaction vessel with a compartmentalized solubilization chamber  
Disclosed are a method and device for performing sequential analytical reactions involving a first dry reagent and a second dry reagent comprised of two or more components having different rates of...
5369036 Enhancement of signal in immunoassays using microparticles which contain different detectable substances  
A process for assaying at least one analyte uses a tracer which includes multiple detectable substances. A tracer composition includes at least one ligand labeled with a particulate label, the...
5369037 Simultaneous multiple assays  
A particle agglutination-based, stable kinetic method for simultaneously determining the concentrations of multiple analytes in a single fluid sample with the addition of a single reagent, that...
5356782 Analytical test apparatus with on board negative and positive control  
The invention is an apparatus useful in carrying out an analytical assay. The apparatus has a positive and negative control, as well as a site for determining the presence, amount, or lack of an...
5342790 Apparatus for indirect fluorescent assay of blood samples  
A patient's health is diagnosed by centrifuging blood samples in a transparent tube, which tube contains one or more groups of particles such as lyposomes or plastic beads of different densities...
5330891 Method for detection of a nucleic acid using particulate reagent having polyoxyalkylene side chains  
Biologically active reagents are prepared from particles of copolymers having polyoxyalkylene side chains, each of which side chains has a molecular weight of at least about 88. The reagents are...
5294370 Selenium or tellurium elemental hydrosols and their preparation  
The invention relates to a process for the preparation of a sol of a metallic or a non-metallic element, such as selenium, tellurium, gold and silver, wherein said process comprises the reduction...
5290707 Method for detection of microorganisms  
A microorganism detection system provides initial warning, confirmation of dentity, and recognition of pathogenic factors in microorganisms from environmental samples. The method and apparatus of...
5284948 Drug hapten analogues for immunoassays  
The invention is directed to new drug hapten analogues comprising: (A) an active ester group; (B) a drug hapten nucleus selected from a hydantoin nucleus or a barbiturate nucleus and (C) a...
5270166 Immunoassays employing generic anti-hapten antibodies and materials for use therein  
The present invention relates to immunoassay methods for detecting and measuring the amount of an analyte in a sample by means of generic anti-hapten antibodies. Also disclosed are multi-analyte...
5242804 Simultaneous dual analyte assay  
A simultaneous dual analyte assay for determining the fertile period of the human menstrual cycle. The assay utilizes a capture reaction component consisting of P-3-G immobilized on a microporous...
5238652 Analytical test devices for competition assay for drugs of non-protein antigens using immunochromatographic techniques  
An analytical test device for competition assay for particular non-protein antigens, such as antigens representing drugs of abuse, is disclosed. The analytical test device is a test kit housing...
5236849 Method of high sensitivity immunoassay  
A method of high sensitivity immunoassay characterized by inclusion of processes (A), (B), (C) and (D) described below. Process (A): A process of binding of a solid carrier and a complex...
5231035 Latex agglutination assay  
Methods for determining the presence of a first ligand, preferably a hapten, in a sample suspected to contain the first ligand are provided, along with reagent systems and apparatus suitable for...
5229268 Method for diagnostic immunoassay by solid phase separation  
A method for performing a diagnostic immunoassay by a solid phase separation. To a reaction mixture of a test sample and labeled antibody, which forms a complex of any analyte present in the test...
5206086 Particle-stabilized epitopes for standardization and control of immunoassays  
The invention relates to a process for preparing standards and controls for immunoassays employing monoclonal antibodies. Monoclonal antibodies are used to isolate a restricted portion of an...
5202269 Method for immunochemical determination of hapten  
A method for immunochemical determination of a hapten in a sample is disclosed, in which (A) a high-molecular compound to which the hapten is bound (reagent A), (B) insoluble carrier...
5200315 Particulate biologically active reagent containing polyoxyalkylene side chains, analytical element and methods for use of the reagent  
Biologically active reactive are prepared from particles of copolymers having polyoxyalkylene side chains, each of which side chains has a molecular weight of at least about 88. The reagents are...
5196349 Immunoassays for thyroid hormones using thyroglobulin  
Immunoassays for measuring thyroid hormones such as thyroxine(T 4 ) and triiodothyronine(T 3 ) are carried out by incubating a serum sample with either (a) unlabeled thyroglobulin and a labeled...
5162863 Method and apparatus for inspecting a specimen by optical detection of antibody/antigen sensitized carriers  
In a method and an apparatus wherein carriers sensitized by an antibody or an antigen are caused to react to a specimen sample and the condensation of the carriers caused by the antigen-antibody...
5162237 Reaction cassette for preforming sequential analytical assays by noncentrifugal and noncapillary manipulations  
Analytical reaction cassette and method for performing sequential analytical assay procedures to determine the amount of an analyte in a liquid test mixture. The reaction cassette can be in the...
5154887 Phenalenimine fluorescent dyes and their use in analytical compositions, elements and methods  
Certain phenalenimine fluorescent compounds represented by the structure ##STR1## wherein R' and R" are independently hydrogen, alkyl, cycloalkyl, aryl or a heterocycle, or R' comprises the carbon...
5145784 Double capture assay method employing a capillary flow device  
A capillary flow device useful in double capture assays, such as double capture immunoassays, and a double capture assay. The capillary flow device comprises a capillary track, a sample receptacle,...
5132206 Fluorescent pigments for tagging biological molecules  
A general method of assay for biological molecules using daylight fluorescent particles. The method described is applicable to assays involving immunological reagents, nucleic acids, hormones and...
5106963 Phospholipid conjugates and their preparation  
Phospholipid conjugate compounds derived from cardiac glycosides and sters useful in liposome immunoassays are disclosed as well as their method of preparation.
5102788 Immunoassay including lyophilized reactant mixture  
A lyophilized mixture of reactants for an immunoassay includes antibody-gold sol particle conjugates, antibody latex particle conjugates, polyethylene glycol, a polyethylene glycol p-isooctylphenyl...
5075215 Use of daylight fluorescent pigments for tagging biological molecules  
A general method of assay for biological molecules using daylight fluorescent particles. The method described is applicable to assays involving immunological reagents, nucleic acids, hormones and...
5071774 Multiparameter particle analysis  
A method for determining the presence of a specific binding member bound to first particles in a liquid medium is disclosed. The method comprises providing in combination (1) a liquid medium...
Matches 251 - 300 out of 350 < 1 2 3 4 5 6 7 >